Muzzle Energy Chart

[b.b]

Thanks Neil 👍
Do you have for .22 as well

[u.k.neil]

Thanks Neil 👍
Do you have for .22 as well

Sorry, I don't. If ever I wanted to shoot .22 cal I would be using one go my rimfire rifles.


Neil

[Phil Russell]

For those wanting .22 (and .177 for that matter) I have Excel charts for both calibres ... not sure where they came from but my file is dated 2013. I did laminate copies and find them very useful.
If you want copy/copies just let me know by PM. I apologise in advance to Neil because I could not open his download photobucket file so do not know if my files are the same or not . Pellet weight vs velocity for range of weights and ft.sec giving ftlb.
Cheers, Phil

[angrybear]

This is a really easy site to use, https://airguncalculator.com/

[Shed tuner]

Spent 10 mins this morning with the laptop over breakfast knocking these up:

[b.b]

Brilliant 👍🏻👌

[Clank]

Very kind, thank you very much for that. What the charts clearly show is that it doesn't take much at all to exceed the 12ft lb limits. Just a few feet per second will take you over.

[billsnibby]

'Morning All,

I thought this might be useful as an alternative to tables.

Print the file then just place a rule on the outer pellet weight and velocity scales then read off the energy on the middle scale; the dotted line shows an example.

Best Regards,
Bill.

[Shed tuner]

that's actually really cool.. not seen that format before.

[IainMAD]

Have sent PM

Is this still available.


Many thanks

[Skipjack76]

That is really handy thank you.`

[Travis299]

This may help.
FPS = Feet Per Second, MPS = Meters Per Second, FPE = Foot Pounds of Energy.
To convert to Joules multiply FPE by 1.3558, Joules to FPE multiply by .7376
To convert MPS to FPS, MPS x 3.2808399 = FPS .
To convert FPS to MPS, FPS x .3048 = MPS.

FPE Formula is Pellet weight (gr) x FPS x FPS divided by 450240 or 450436.7.

450240 is 2 x velocity of gravity x 7000, (2 x 32.16 x 7000 = 450240)
450436.7 is 2 x velocity of gravity x 7000, (2 x 32.17405 x 7000 = 450436.7)
The constant 450240 or 450436.7 depends on which value you use for the velocity of gravity, (acceleration due to gravity).
32.16 ft/s/s or 32.17405 ft/s/s. There are 7000 grains in one pound.
The difference does not matter which ever constant is used for the FPE calculation.